bool CatalogManagerReplicaSet::runReadCommand(const std::string& dbname,
const BSONObj& cmdObj,
BSONObjBuilder* result) {
auto targeter = grid.shardRegistry()->getShard("config")->getTargeter();
auto target = targeter->findHost(kConfigReadSelector);
if (!target.isOK()) {
return Command::appendCommandStatus(*result, target.getStatus());
}
auto resultStatus = grid.shardRegistry()->runCommand(target.getValue(), dbname, cmdObj);
if (!resultStatus.isOK()) {
return Command::appendCommandStatus(*result, resultStatus.getStatus());
}
result->appendElements(resultStatus.getValue());
return Command::getStatusFromCommandResult(resultStatus.getValue()).isOK();
}
bool CatalogManagerReplicaSet::_runReadCommand(OperationContext* txn,
const std::string& dbname,
const BSONObj& cmdObj,
const ReadPreferenceSetting& settings,
BSONObjBuilder* result) {
auto targeter = grid.shardRegistry()->getShard(txn, "config")->getTargeter();
auto target = targeter->findHost(settings);
if (!target.isOK()) {
return Command::appendCommandStatus(*result, target.getStatus());
}
auto resultStatus = grid.shardRegistry()->runCommandOnConfig(target.getValue(), dbname, cmdObj);
if (!resultStatus.isOK()) {
return Command::appendCommandStatus(*result, resultStatus.getStatus());
}
result->appendElements(resultStatus.getValue());
return Command::getStatusFromCommandResult(resultStatus.getValue()).isOK();
}
/* organize fetch bundling for given expression */
static void
bundle(Task *t, Expr *x)
{
Metric *m;
Host *h;
int i;
if (x->op == CND_FETCH) {
m = x->metrics;
for (i = 0; i < x->hdom; i++) {
h = findHost(t, m);
m->host = h;
if (m->conv) /* initialized Metric */
bundleMetric(h, m);
else /* uninitialized Metric */
waitMetric(m);
m++;
}
#if PCP_DEBUG
if (pmDebug & DBG_TRACE_APPL1) {
fprintf(stderr, "bundle: task " PRINTF_P_PFX "%p nth=%d prev=" PRINTF_P_PFX "%p next=" PRINTF_P_PFX "%p delta=%.3f nrules=%d\n",
t, t->nth, t->prev, t->next, t->delta, t->nrules+1);
__dumpExpr(1, x);
m = x->metrics;
for (i = 0; i < x->hdom; i++) {
__dumpMetric(2, m);
m++;
}
}
#endif
}
else {
if (x->arg1) {
bundle(t, x->arg1);
if (x->arg2)
bundle(t, x->arg2);
}
}
}
StatusWith<BSONObj> CatalogManagerReplicaSet::_runConfigServerCommandWithNotMasterRetries(
const std::string& dbname, const BSONObj& cmdObj) {
auto targeter = grid.shardRegistry()->getShard("config")->getTargeter();
for (int i = 0; i < kNotMasterNumRetries; ++i) {
auto target = targeter->findHost(kConfigWriteSelector);
if (!target.isOK()) {
if (ErrorCodes::NotMaster == target.getStatus()) {
if (i == kNotMasterNumRetries - 1) {
// If we're out of retries don't bother sleeping, just return.
return target.getStatus();
}
sleepmillis(kNotMasterRetryInterval.count());
continue;
}
return target.getStatus();
}
auto response = grid.shardRegistry()->runCommand(target.getValue(), dbname, cmdObj);
if (!response.isOK()) {
return response.getStatus();
}
Status commandStatus = Command::getStatusFromCommandResult(response.getValue());
if (ErrorCodes::NotMaster == commandStatus) {
if (i == kNotMasterNumRetries - 1) {
// If we're out of retries don't bother sleeping, just return.
return commandStatus;
}
sleepmillis(kNotMasterRetryInterval.count());
continue;
}
return response.getValue();
}
MONGO_UNREACHABLE;
}
